<template>
  <div class="main"></div>
</template>

<script>
export default {
  name: "DynamicBarEcharts",
  mounted() {
    let myChart = this.$echarts.init(document.querySelector(".main"));

    let data = [];
    for (let i = 0; i < 5; ++i) {
      data.push(Math.round(Math.random() * 200));
    }

    let option = {
      xAxis: {
        max: 'dataMax',
      },
      yAxis: {
        type: 'category',
        data: ['A', 'B', 'C', 'D', 'E'],
        inverse: true,
        animationDuration: 300,
        animationDurationUpdate: 300,
        max: 2 // only the largest 3 bars will be displayed
      },
      series: [{
        realtimeSort: true,
        name: 'X',
        type: 'bar',
        data: data,
        label: {
          show: true,
          position: 'right',
          valueAnimation: true
        }
      }],
      legend: {
        show: true
      },
      animationDuration: 0,
      animationDurationUpdate: 3000,
      animationEasing: 'linear',
      animationEasingUpdate: 'linear'
    }

    function run () {
      var data = option.series[0].data;
      for (var i = 0; i < data.length; ++i) {
        if (Math.random() > 0.9) {
          data[i] += Math.round(Math.random() * 2000);
        }
        else {
          data[i] += Math.round(Math.random() * 200);
        }
      }
      myChart.setOption(option);
    }

    setTimeout(function() {
      run();
    }, 0);
    setInterval(function () {
      run();
    }, 3000);

    myChart.setOption(option)
  }
}
</script>

<style scoped>
  .main {
    width: 1000px;
    height: 1000px;
    margin: 0px auto;
  }
</style>
